<!-- search form -->
<form action="#" method="get" class="sidebar-form">
  <div class="input-group">
    <input type="text" name="q" class="form-control" placeholder="Search...">
      <span class="input-group-btn">
        <button type="submit" name="search" id="search-btn" class="btn btn-flat"><i class="fa fa-search"></i>
        </button>
      </span>
  </div>
</form>
<!-- /.search form -->